Multiple-spindle automatic lathe.



E: U. HARRISON. MULTIPLE SPINDLE AUTOMATIC LATHE.

APPLIUATION FILED JULY 25, 1SO5,

Patented, July 20, 190%.

.11SHEETS-SHEET l.

WVVNESSES; wvrwmm,

uw am Um DERHfLLHRR wwwg) if www, BY MMUQQM MM5 HVTORNE`- 4- gli?? @Mdm/1d@ E. U. HARRISON. MULTIPLE SPINDLE AUTOMATIC LATHB. APPLICATION FILED JULY 25, 1905,

928,382. Patented July 20, 1909.

l1SHBETS`SHBET 2.

O Ll.

WWNEssE; NvENToR,

DWARDUNDERMLL HnRmsoN, f; DT Mmmm@ n H; s ATT'ORNEY Ei UJ HRRSON. MULTIPLE SPINDLE AUTOMATIC LA'IHE.

d!) im .APPLICATION FILED JULY 25, 1905. 6"@

mma'n ll SHEETS-SHEET 3y Patentd July 20, 1909.

E. U. HARRISON. MULTIPLE SPINDLE AUTOMATIC LATHE.

APPLIUATION FILED JULY25,1905. A m 928,382. Patentad 1111;?20, 1909,

FIC. i@ FIG, f3

FIG, 9'

WHN assas- E. U. HARRISONi MULTIPLE SPINDLE AUTOMATIC LATES.

APPLIGATION FILED JULY 25,1905.

928,38, Patented July .20, 1909A 11 SHEETS-SHEET 5` Fm. @E

gem. ,A my EDWARD Ummm@ HPQRWSON,

I W T I E. U. HARRISON.

MULTIPLE SPINDLE AUTOMATIC LATHE.

APPLICATION HLED JULY 25, 1905.

928,382. 4Pzsaented July 20, 1909.

1l SHEETS-SHEBT .FIC

f MLK ms ATTORNE.

E. U. HARRISGN.

MULTIPLE SPINDLE AUTOMATU LATER. APPMUATION FILED JULYz, 1905.

llBHEETE-SHEET 'l'.

Patente July 20, 1909.

E, U. HARMSON. MULTIPLE SPINDLE AUTOMATIC LATER.

WNENTOR. ELIBWARDLNDERMLL HARRsSoN,

m5 ATTORNEY,

W N il S S as -I l ggd/g2 E. U. HARRISON.

l MULTIPLE SPINDLE AUTOMATIC LATHE.

APPLIUATION FILED JULY 25, 1905. 928,382.

Patented July 20, 1909.

11 SHEETS-SHEET 0.

S l l 5 N I Gl E I v z "e 2' f3 w WVTNESSES-J `INVENVOR., 7325?@ JAJM EDWARD UNDERMLL HFxRmSON; n www BY "vawui,

ms ATTQRNEY E. U. HARRISON.

MULTIPLE SPINDLE AUTOMATIC LATHB.

APPLIGATION HLBD JULY25. 1905. Patented July 20,1909.

l1 BHBBTB-SEBET 10.

FIG' 2.5

FIG 244 W TN 533515-,

:N v ENTQR., I Enwmw UNDERH m. HARmsoN,

ms ATTORN EY.

gea/gy@ @aww @,144

t1 Q AA. i

E. U. HARRISON.

MIIL'IIPLl SPINDLE AUTOMATIC LATHE. APPLIUATION FILED JULY 25. 1905,

11 SHEETS-SHEET 1l.

928,382. Patented Ju1y 2o, 1909.

m v amvog, mLLgHARmsoN,

w TNEss-Es Y EDWARDUNDE yw @Y improved.

non met n. www@ "l .i

.il Klei." ll iltlljllle i EDWARD lflNDlRHlliL HARRSON, OF BIRMN (lf-ABL HN'GJAND.

l Specification of Letters Tatonk.

leeented July 39. 75.909.

Application .filled July 26, 19o-5. Serial No. 271,15?.

.To all whom n 'ma/gj concern: Be it known that l, EDWARD UNDERHILL Hnnmeon, s. snlijeet of the King of Greet Britain, residing et Asl'ileyCollege. Coxwell Reed, Led ywood, B iinii'nglien'i, in the coniity of llelwiclt, England, lieve invented n new end 'useful improvement in Multiple-Spindle Automatic Lathes g end l do hereby decline the following to be e full, clear, ond exact description of the seme.

This 'invention relates to entometio screw milking sind metal turning mooliines ol' that close in whioli'V n series of I'otlsof meteiielmey be operated upon.simultaneously, by inde pendent tools having eepni'ete and distinct functions; nml. wherein menne are pirovideil for automatically presenting @noli rod ol' the series after being o pe'i'nted upon by one tool, to the fiction of the next ecljeeent tools, amil successively to the remaining tools of tile eeries, whereby@ plurality of rods will undergo seperete ind distinct operations simultaneously, and. whereby7 eftertlie f 4complete cycle of operations of the mach-ine, one orticle will be completedeteach successive ed- Vnnceinent-of the Woil. I y My invention comprises improvements in multiple spindle automatic lathes, and oonsiete efe. nuinbei of improvements in the gew enel opeietion nmldeteils, whereby the ection of the Whole machine is sin'ipliied end .ltlnltiple spindle automatic lathes tceo1'cling; to my invention nre driven `ley one beit running in one direction only. Tlie mein bed is enst inone piece, whereby 'the machine is mede more rigid tnflstrongei' in use. The nflvenoingg' of the end. tools is ell'eote'rl by ineens, whereby the amount of e'lv'ence is regulated in e. simple nie/nner.Witliont the nel oeesity for the interchange oli parte, yWhile the screwing die is rotated et Various epe/oils Without Ftim? interchange ol2 Wheels. t quick. lolut-ion of the Work spindle oyinilei" end quick receding ol ,the end tool liolclei eil by the employment of iiictio automatically operated. The operation of the side tools "s else-improved byltleemploy- 4ment oi :t seperate. oem .pnt/li ont. .seperate actuating; means for eeoli. tool, tl toolsnpl e preaching the Woik radially, tlir l 'facilitating more cleorennee to the work en( lie Arotation the removal ol." the tinnings.

of the Worlepindle lpylintlei' .niedesolei'v and. mole eieetive then hitherto@ l lio oiclei tliet my .inizfentioiri insb* lliecleerly 'by givingni'ideistoocl mil more ieetlily carried into practical ell'ect, l. lieve oppeiided lie eimtoy eleven slioeie of ili'ewings, illustre-ting the eli-ine, in n'lncli:--- llieni'e l: is :t lli-ont elevation ol' n multi 'le spindle mitometio lotile assembled reedy 'or which the end tool holder is caused, to tcl-l. Fig. "1': is o pion of the` seme. Fig. 8: is t front elevetion oli tli'e sliding bracket opei'otoil by e. coni for ed-y vencing anni i'ecefling the seid tool holder. Fig. 9; is e. pien ol the slime. Fig. 10: is s.

'font elevation of" the upper poition ol the' link mechanism. Fig. 1l is n reel eleve tion of the end tool holder` enel gez-n born Fig. 1?.: is e seotionolview of the seme et (l. D. in Fig. le. Fig. 13: is en end elevation of the end tool holder. Fig. 14;: is an ond elevation oi the goin' 4box removed from 'the tool' holder.

Fig. 15: ie en end elevation of the redini' tool holder. Fig. 16: is e. sectional View of the Ylieftdstocli showing the upper spindle in seetion and the lower one in outsnil eleyntion. 17: is e eee-tional View of tlll h'etlstocli; et` lll. F. in lo, showing oleo the redini tool ectuotijog rocking .sliztlts and i'olleii'e. Fig. i8: .is en elevation of the cone` bearing o1' bush employed 'loi' inoi'inting; the Work. spin illes. Fig. 1): is :mend View of tile come. Fi' 2l] 1s e eeotnfigml ele notion filone; elle seni.

elnilt Showing the geni' by wljel'i l e work spindle cylinder nml een), (imm e, otntecl end. tlielooli la( .iet-n. el, .2li is it eeetioiiel 'View ol' E sinne et G.' V Fig. le :e vee eeeton el .im-il, inliig. l, whereby ving elieilt is driven in eitliei directif s desired. 23 is o. lon.M gitudinel sect 22. Fig. 24F. is on enlei'goci View of the lockl in ol the some et .FL-L, in Fi ing plungevi' .shown byFig; 20, the plunger being in its' opeijeted orlwolting position. Fig. '25 is e plelito the Some.. Figs. 26 and 2? ere, respectively,-eifelevetion and sectional enel View oi" the extension Sil.

` in `the constriletion of en automatic multiple spinfiielittlie oncoming toiiny 'invention es eliown upon tlie oeoomponging drawings, lf employ e mein leed or cestii g 1. mounted upon o. pen 2. for tlie ieeeption of the turn- 6: is :t front View ofthe il U ings and oil. At one end of the bed a saddle 3. is bolted to its u persurface, while at the other end of the bec f1'. is a xed headstock 4. cast integral withthe bed. A.l driving shaft 5. is provided above the bed which operates the end tools in the holder 6. and gear-box 7. and work spindles in 'the headstock 4. A.

` cani shaft 9. extends frein end to end of the machine below the surface of the bed 1. and controls the advancing and receding of the end tool holder 6. and the rotation of the vlnal -upon a short shaft or stud 15. secured to a bearing or lug on the saddle and being above the shaft 11. This long 'innen 14. gears :with-a lspur wheel 16. keye upon the' inain drivind shaft '5; which it rotates. The afore-v said ".skew ear wheel 12. oears with. an-

' other skew gear wheel 17. secured upon a i sleeve v18. by rneans'ofa-key 19. j This sleeve 18.*. is' mounted at right angles to the main drivingjsha'ftj and is carried by a'bearing upon; the saddle 3. and through it passes alfhollow.lsliaft,f20. extending from front to backof 1the*rnachine.' Upon the hollow p .shaft "2Q, and secured thereto by a screw 21.

is. a 22'. gearing with a worm wheel 23. keyed :upon'the cam shaft 9. 'which it rotates.; 'Y

Onitlie. shaft 9. is'mounted a cam 24. for -ac'tuatingthe end tool holder 6. On the l periphery '"ofgthis earn 24. .is a strap 25. in

contact. withayertical roller 26. on the top of the'` bracket 127. sliding upon the pins 23. secured in thefbed 1. Secured to the bracket *27. are duplicate links 29. pivotally secured to another set of duplicate links l30. by

means of a crosshead 31. sliding in slots in the links 3U, the positionof the said crosshcad '131. in the slots being adapted to be adjusted by means of a screw 82..secured to the links 30. and passing through the crosshead 31. for the purpose hereinafter set forth. The

"links are pivoted upon thcycain shaft 9. by 4means of a loose collar retained in 'position by two fixed collars 33. The upper ends of the said' links 30. are pivotally` secured to horizontal links 34, which are in turn secured to the end tool holder 6, byrneans of an attachment piece shaft 9. and cani 24. are rotated the bracket is moved ondiviso by means of the cani strap 25. thereby moving the lower end of the links to the right and consequently the links 34. and rnd tool holder 6. to thc left and bringing the tools into Contact with the work. lo regulate the annountof movement of the und tool bolder 6. the screw 32. is rotated When the cani.

` tion.

entre@ thereby altering the length of travel of the 'upper end of the links 30, the amount of nally coned riction clutch 37, allrotating freely upon the hollow shaft in the position shown upon the drawings at Fig. 4; Inside.

the frictionclutch 37.y is an. externally coned clutch 38. adapted to slide upon a key 39. in the hollow shaft 20. On the opposite side of the clutch 38. is another internally coned clutch 4C, secured to a large spur wheel 41.

both being free to rotate upon the hollow shaft 20. The spur pinion 36. meshes with a siur wheel 42. carried by a stud 43. which a so carries a spur pinion 44. keyed thereon. Keyed upon and rotating with the cani shaft is a disk 45. 'carrying catches 46, 47 on either face 5 these catches coming intocontact with the pins 4S, 49. carried by arins of the rock- -ing lever 50. pivoted to the bracket 51. at

52,. W hen the catch 4G. cornes into contact with the pin 48. the rear end of the rocking lever 50. is depressed and with itthe link 53,

54. formed in two parts and joined by a spigot and socket sliding connection, a spring 55. returning it to its normal posi- The socket ieee 54. is secured to a stud mounted in t e bracket 51, this stud also carrying a forked lever 57. so arranged that when the socket piece is depressed the upper end of this forked lever plvoted to a sliding collar 58. is moved upon the shaft 59. until it strikes the collar 60. secured to the said shaft, moving it forward. This shaft 5l). is secured to the clutch 38. by means of a key 61. sliding in a slot 62. in the hollow shaft 20. so that when the shaft 59. is moved forward in manner previously described the clutch 33. is brought into contact with the clutch 40. thereby securing the spur wheel 41. to the hollow shaft 20. The sleeve 18. and pinion 36. are now rotated by the skew gear wheel 1-7, the pinion 36. driving the spur wheel 42. at a reduced speed, the spur wheel 42. driving the pinion 44. which in turn drives the spur wheel 41. at a further reduced speed. fhe wheel 41. is now secured by the clutches 40 and to the hol-'l low shaft 20, which by the worm 21. and worin wheel 23. drives the cani shaft l). at a reduced speed, thereby imparting to the end tool holder 6. a slow forward feed.

At the conclusion of the forward nieve ment of the tool holder 6. the catch 47. strikes the pin 4), raising the lever 50. and

i causing thelever and sliding collar 58. to

nieve rearward until they strike the collar i335. 'mov'x'ug the shaft 50. rearward yz'igimj the @lumi 38. ini-0 aon-mnt wub. ih@ @111.11m 37, @zw-@ing the holow shaft 20. 'to rotaia m the mm@ speed as th@ Sleeve 35E. conste@ mtl driving im @Sum slla at a, quicker wed mn fm' H1@ Forward. movumnt, aafusixg Hw too l )Mm to moed@ may@ l'apdy than it :ML- 'mnsmhnhs Reading of the m01 hofdm. ing; cause-d by the swap 64:. un the; cmu mowing int-o Contact with tlm falle? :26.

To prevent breitling@ or dmmgclmcni; 0f tiemachiw in ift@ @wm of my ci the 124ml@ gveuoming du, I ma uf; ma), Spmwhml vmen. Mather m Eik Washms ('35. on di emd l :das pm a upon this shud sleeve (M5, :md a .willem nut 57. by mbaiumgg; w h the sme'v 66. compra-@SGS the Wasrv against the Wh y); 41,2. y #lisa mw am o eguhte the' 55m-155m@ so il the 4.2. slips upml. thc shud mmv. 11m tool ivd-mmf@ dul o1 amy ahum L pv@ @um is J'mlgh upnm lie-a nm-shin@ im' G. is operated by* l Hm ahw-.h hazing-g fflfm in its @ammi or 0pm.. we postimf.. The liande Q. pv @ted Il@ ifm@ hand Whe-:El and lms meth upon its man' und @mgm 6th im. a. pmim pfunggcl' '70. :so tmt h@ plunger "m sin azi and 5300i. L'wl @ad by mobiler.

mounted. aft he one end in conical inei's 01 75 limafnfilgf i341.. whieh um split lolilgi'udlnalfr t0 afw ihr mtmnn dimnter to be iidjusd. Tim work Spindle cylinder is oncaly bm'd a ticm 0l the be'm'ngs, th@ ndjua'stmam fxeng @H'ectad by mit@ 85, nias; 86, in work spld vyinder taking uw@ Mom imi groom in the bearing; 84. to trom-tion whim belugf adjusted. im; ETS.. loose ujpfm the'spindes and am provided @in on@ face -Wt a, siem@ on. im @mi teeth which um adapted. im en@ Wt'x a sidiug smol. keyed io' 'well i Spb-.lilies T7, the nion 78. and spu 88. bengshown in t1@ drawings afb in gem* @und im their positn fur im 11g; tlm Wo'l." spindles; in which position. dmv are ummny retained by n. ring 89.- bmfin alwny adjacent '30 the scmwng posi* Lion :m: Mw puljuofI nmeafter set fQrah. When 50mm ng is ,seing performed upon the il -wfwk in. mie spnfl@ (the upper one shown im .'g. Mi). ifm-3 spmh is held; fstyfionmy For this pupmse. n

)mir/.omai plunge? 9G. is 'provided -onnrolad Jy @prin Hl; the 10Wex." portion. of the 100 Jhmgm watering a groove in the spool 88;

. Spring?, fox-@ing the 515ml into Contact with ha @Minder-S Q23. secured to the Work spindle @31d of the spindle cylndenhods Spud upon the spindle in which the Work 105 sm'wd/n gear with the pinion 78.

' ''ponjuw work pmdle cylinder stopping, 'the kluger QU i@ operated 'by the spli'ng 'J1 and @miem a notch in the Work spind@ cyin 110 dal. mfwug the Smo 8S into Contact Wt'n.

h@ cynder 92 ocing the spindle und Work' me wfewing @para km to be perfoymed. @n

th@ @and of the mm1 drum. S2 is :1m @extension SM 115 mii the pungm 90 opeg'nting the Spedi 36E ,to

euml' the ulotch. 93 in the work spindle cy# vide a secondary spring controlled 'plunger which thc `cycle o1" operations is concluded 1 the upper portions ol the href1 ets 99 and 100 entering the spools 102 and 103. respectivel'f, carried by the work advancing spindle 104. and work locking spindle 105.. re-

" i specti'vely. On the forward end of the work spindle 77. 1 provide a cap 100. conically hored, against which the split conical end of' the locking spindle abuts. At the conclusion of the cyclo oi'operations upon one piece of work thespool 103. is inoved to the right by the cani strap 9S. and bracket 101. thereby' releasing the pivoted iingers 107. carried on the collar 10S. which normally abut against the end ol the locking spindle 10.5. and also releasing the conical end oi the spindle 105. from the cap 106. immediately before Uhis, the spool 102. and advancing spindle 104. is inoved to the lelt hy `the cani strap Q7. and bracket 09. and upon the locking spindle 105. being released the advancing spindle 104;. is moved to the right advancing the rod being worked a that itin ay undergo another series of operations.

At the conclusion of each operation the work is advanced automatically to the next series ot' tools to undergo a further operation. Mounted upon the cam sha-lt 0. is a spur wheel 81. gearing with a gear ring S0. onthe work spindle cylinder 76. and adapted to ro- .tate it when the said wheel S1. is keyed to the cani shalt. The work spindle cylinder is held in position hy a plunger holt 100. working in a hush 1101 in a bracket 111, carried by the hed 1, the nose of the said bolt 100, being adapted to enter holes inthe nnderside o1 the work spindle cylinder 76. inside the plunger holt 109. is another plunger 112, a spring 113. being between these two plunger-s to facilitate their operation. The plunger bolt 109. is secured to the end of a pivoted forked lever 114, by a pin 115, working in a slot in the plunger 112, this plunger 112. being secured to and actuated by duplicate levers 110, which are pivoted at 1.17.

as is also the forked lover 114. The plunger holt 100. is withdrawn from .the work spindle cylinder' 70. by the forked lever 1141. actuated hy a cam 11H. on the shaft 0. while it is raised to its locking position by a cani 110. which operates the plunger' 112. raising it against the spring 113. and also the bolt 100. in :in elastic inz'lnmr until the cud oiv the slot.

reaches the pin 115, when the bolt 10Q. is raised. The spur wheel. 81 is norinallytree to rotate upon` the cani shaft 9. hut is automat ically locked thereto the conclusion ot' the ojjieration upon the ,vxk so that the work ledle cylinder rotated. Ilhis locking is controlled by the cani 110. actuating the duplicate levers 116. to which is secured the sliding spool 120. which actuates a key 121. sliding in the cani shaft. To the other end 7. of this key 121. is secured a slidingr disk 122. carrying pins passing through a collar 121. When the spur wheel 81. is free upon the cani shaft 9. the pins do not enter the slots in the disk 125. securedto the spur so wheel S1. the sliding key 121. having been nioved to the left by the cam 119. At the conclusion of an operation upon the work the key' 121. is moved to the right, the pins 123. entering lthe slots in the disk 125. and. thereby .v5 causing the wheel 81 to `rotate with the cani shaft 0. This spur wheel S1. gears with the gear ring 80. on thework spindle 76. which it then rotates'for a quarter of a revolution advancing the spindles to undergo thi? next operation, when the pins 123, are again withdrawn and the wheel becoines stationary uponthe shaft Q.

The radial tools are actuated hy means of cani dogs or removable catches on the cani e drum 82, which is provided with tapped holes for their attachnior'it. The cani drinn is continuously rotated. :thy a spur wheel keyed upon the cani shaft which gears with the gear rin 83. on the said cam drum. Four rocking shafts 127. are mounted in the headstock 1, two bein g at the front and two at the rear ot' the machine. Each of these shafts 127, carry a rocking level' 128, which carry rollers 129. for advancing the tools carried by the slides 131; the shafts 1271 also carrying rollers 130. for recedingihe aid tools. The radial tools which operateupon the side of the workare carried by the tool slides 131, the lower' two working upon beds 'formed 11e upon the top of the main hed 1, while the, 'o upper slides 131. are carried under a projccting bracket 132. secured to the top of the headstock 4. 0n the ends ot' the rocking shafts 127. are secured links 133. pivoted-.to 115 links 1254, (shown dotted in lig. 15), secured to the tool slides 1131. in iii-nner hereinafter described. The tool slides 131 have slots in which work sliding nuts 135,.securcd to the which the position of the t is set in advance. The tools are carri 1d by an angle plate or e nivalent secured to the inner ends otY the todl slides 131. Then the cani dogs rollers 128. the shafts 12T. are operated and also the links 1321, and 131. nringing the tools into action where they reinain until the cam dogs strike the return rollers 129. when the i tool is withdrawn. There is a separate cam 130 tool holders by screws 136. by the rotation of 12o' on the cani drum 82. strike the advancing 125` path and cara dog for suoli roller, so that eacll radial tool may be set independently ol tl e others for a separate and dil'l'crout operation. Under tbe radial tools l form tvs-o llcllow shafts 137. into Whioli the tru-lungs tall and are then deliected to the pan 2.

' The ond. tools carried byv the lloldaer l. in the illustration shown consist oi a screwing die or tap carrying spindle 138. rotary box tool or drill holder spindle 139, and stationary box tool or drill bolder spindle 140. The main driving shaft 5. passes tllrougli the tool holder li, and gear box'?. and upon it is keyed a spur pinion 141. which gears with a spur wheel llycarried by a secondary sliait 1&3. Pivotcd upon this secondary shalt M3. .is a forked lever 14d. which slides along,` 'lllc said secondary shalt, taking- Witli it the small pinion 145. Gearing,- witll tbe pinion 145 is another pinion 146. also carried by tile lever Mel. and adapted to gear with one ol tl. -ourwl1cels 14.7. 145.. lill). carried by tlie outer cylinder ll). ol tlre screwing spindle I 13S. This pinion ifi-6, ,may be put into gear with any one of the spur wheels 147, 148, -lflll by raising or lowering the forked lever lee. within tbeslot L31, in the gear box 7", a pivoted catch-l52. ytaking into holes 153, and actuated by a spring,r 15e. being provided for retaining it in. position. lll'otion is transm rnitted troni the main driving shalt to the outer cylinder 15G. of the screwirn;l spindle and thence .to the screwing spindle proper 1353. by means ol the catches 15.5, 15G, se cured to tl'ic outer spindle 150, and screwing spindle 135. respectively. When a rod is being screwed the Wort; Yspindle carrying;l .lt lield stationiny as previously described, the scrcwiiufA spindle and die being rotatec'ln tbc rod is screwed the spindle 138. advances until the catch 156 clears the catclr 155, at

' rotation of the die spindle is prevented'.

which moment tlreratcliet wheel 157: comes in to contact with tile nawl 15S. carriedby a collar 159. upon tlie gear box Y, 'when lurl'ller cli nnrltaueously willi the stoppage ci the screwing spindle lSSftlm work spindle begins to rotate thereby Witbcilroaviug the work lronr ltbe die. Thespur 'Wheel lill'gears will] another wheel 160. carried by a secondary shaft lol., the Wheel i gearing willi. a Wheel ltl. oarried by ltbe rotary box'tool or drill luilltu' spindle 3.39. which it rotates.

`When it is del-ured` to forni. a lelt l'ra'nd thread upon the Worls, tlic long; pinion la. is removed and tliof Wl'reel .l pushed into gear with the Wir-cel lo. 1t bouw mounted 'upon a `Wl1at I claim tlren'1s:- w l v l. The combination, in a 1n ultiplc spindle automatic lathe, oi:i a bed, a shalt carried by said bed, a driving pulley on said shalt, a driving shalt and a caro slial't, a driving connection l'rorn tire first-named shalt to tlie driving; shaft, a connection from fraid lirstlable longitudinally -inittently rotating said Work spindle cylin der.

2. ln a multiple automatic lathe, the coinbination ol a earn shalt, a cam drum arranged i'or rotation, and operated by d cani slialt, a plurality ol' side tool holders arranged radially to the axis ol' said cam drum, and a plurality ol cani paths upon said. drum. for advancing and receding said side tool hold ers independently and separately.

3. ln a multiple spindle automatic lathe,

the combination ol a cani shalt, an end tool bolder, a cam drum on said cam sllai't, slot-- ted Junk mechanism plvotcd upon. said cam shalt and connected at one end to sind end tool bolder, a nut in said slotted links, ascrew in said links for operating said nut, a sliding bracket actuated by said cani drum and link connectingY said slidiruj,` bracket to said nut and slotted links for imparting; a vari reciprocating .movement to said end tool holder.

5l. ln a multiple spindle automatic lathe, the combination ol" a short shalt, a driving' pulley, on said shalt, an end toolholder, a Work spindle cylinder, a hollow transverse shaft having driving' connections with said slrort shalt, o cron sliait .lri`veu by said hol low slial't and connected for operating the end tool holder and Work spindle cylinder, means for driving the hollow transverse shalt com pricing a friction clutch. freely mounted on the said hollow transverse shalt, a pinion secured to said clutch and gearing with a pinion mounted on a secondary shaft,

a second friction clutch freely mounted.. on`

said hollow transverse sl1aft,and gearing with another pinion on said secondary shalt, a sec ond transverse slialtinsifle said. hollow slial't,

a two `laced friction clutch longitudinally movable on said hollow shaft, and connected to said inner slial't and means lor auto1natically operatingI said inner slralt and clutch "so that it may engage either oi the two' clutches i'or 'Li-lle pudiese ofA driving the said4 cani slialt at drllcrent speeds lor imparting slow advance and quick `return to ticenld tool holder and spindle.

5. ln a multiple spindle .autoniatic lathe, comprising a Workspindle cylinder, a cam drum rotatable around said Work spindle cylluder, a radially movable side tool holder, means for advancing and receding said side tool lrolder, a rocking shalt suitably supported, reciting arms on the said shalt carrying rollers actuatedby tlxe said cam drum :lor cllecting' the reciting ol' the shaft, a link arm on tbe other end ol the slial't connected to quick rotation tothe work the side tool holder for aditnoing and receding the seid tool holder upon the rocking of the shaft. l

6. In a multiple spindle nutoinatic inthe, the combination of- Work spindle cylinder, e plurality of yWork spindles located therein a driving shaft, 'a Apinion thereon pnions free on seid Work spindles and having a clutch end and meshing with and driven by the pinion on said driving shaft, e o lindricel clutch secured to said Work spindle-cylinder `and having a clutch end, a sliding spool on seid spindle located between seid pinions and cylindrical clutch and formed to provide clutches at either end, said cylindrical clutch being in alineinent with seid clutches, e gapped ring located around the Work spindle @ossee a cylinder eng;vagii'igr and normally' lioldi'ng pluralityr of said spools in engagement with the said pinions, it plunger engaging thel 20? locking the work spindle to the Work spindle 25 cylinder', and means lor releasing ssi d spindle at the conclusion of the operation.

ln testimony whereof, I havek signed my name to-this specification in the presence of two subscribing witnesses. f

EDWARD UNDERHILL HARRJSON' Witnesses HAROLD J. C. Fonms'rnn J STANLEY BAURER. 

